INSTAGRAM FLYWITHCAPTAINJOE: goo.gl/TToDlgMY WEBSITE: goo.gl/KGTSWKNEW FACEBOOK PAGE: goo.gl/heUKGb▼▼My FLIGHT-KIT I highly recommend for you guys▼▼MY HEADSET: amzn.to/2yncd9dMY SUNGLASSES: amzn.to/2Rx1mCmMY PILOT BAG: amzn.to/2zYcqShCompany iPad: amzn.to/2ynxOhT▼▼The VIDEO EQUIPMENT I use in my studio and outdoors▼▼MY CAMERA: amzn.to/2yov6sjLIGHTING: amzn.to/2zXH2DBIN-FLIGHT RECORDINGS: amzn.to/2ynmrGH Dear friends and followers, welcome back to my channel, clarifying another great question. Why is there a spiral or swirl in a jet engine? The primary reason for painting designs on engine spinners is for the safety of ground personnel. Working near a running jet engine is extremely dangerous. For example, a Boeing 737 engine, running at idle power, has a hazard zone of 9 feet to the front and sides of the engine. This means that, even at idle thrust, a human that walks within the hazard area or any loose objects, risk being sucked up into the engine. When the engine is above idle thrust, the hazard zone increases to 14 feet or more. Not to speak of the even larger hazard zones of a B777 for example. Therefore it´s absolutely critical that ground personnel can identify a running engine and stay away from it.Even though jet engines are incredibly loud, a running engine may not be obvious to ground personnel. Airport aprons often have several aeroplanes in close proximity with engines screaming next to each other. Therefore ground personnel have to wear hearing protection to suppress the deafening noise. Making matters worse, it can be hard to see that an engine is running, especially during night-time operation, as the black and grey fan blades become translucent when they´re spinning. Therefore spinning spirals make it a lot easier to identify a running engine. Besides that, ground personnel can check if the aeroplanes´ red anti-collision light is still flashing. This indicates that pilots have received their start-up clearance and will start the engines very soon. On arrival at the gate, the light is turned off by the pilots after the engines are shut off and „spiral“ down, after which it is safe to approach the engines from either side. For the same safety reason, the tips of propeller blades on propeller-driven aeroplanes like the Dash Q400 are painted in bright colours, to be more visible to the human eye. You won´t believe how many incidents have happened in the past involving jet engines and ground personnel. Do they scare away birds? That and more information in the video! Thanks for watching, all the best your "Captain" Joe Big thank you to my fellow youtubers providing me with there great video material.Please check out and subscribe to: @HDmelbourneaviation inclips.net/channel/UCggfpOv6udfa8c_B_oem8wA@flightbasegermanyinclips.net/user/FlightBaseGermany@speedbirdHDinclips.net/user/SpeedbirdHD@D/AviationVideoinclips.net/user/versus527@LukePabariinclips.net/user/HeathrowSpottingHDOutro Song: Joakim Karud & Dyalla - Wish you were here goo.gl/kJ9pefALL COPYRIGHTS TO THIS VIDEO ARE OWNED BY FLYWITHCAPTAINJOE.COM ANY COPYING OR ILLEGALLY DOWNLOADING AND PUBLISHING ON OTHER PLATFORMS WILL FOLLOW LEGAL CONSEQUENCES

In the US, “Apostrophe” is pronounced “a-POS-tro-fee”.Aside from that, great video!I’m sure there are many German words that Americans who speak German might mispronounce. Like “Mar-LAY-na” Dietrich pronounced “Mar-LEEN.”

I heard the English is spoken by all pilots because it's the easiest to understand . But. on you tube video i do hear different languages being spoken .is this because there more comfortable in there own language when in there own country?.

ok if birds are attracted to the blackhole seeing the engine inlet as a dark cave. Why not paint the fan blades white along with the spinner cap, the bird would see a white object and not a cave and decide to avoid it instead of flying into it

When I was younger, I used to be addicted to seeing those. So everytime I go to an airport, I always want to see the spiral stuff. I have an interest in plane engines.I have only seen the G swirl and comma before

My uncle was a pilot for this dodge airline that flew in the middle of no where and one time when on the runway this dude from ground staff jumped in front off the plane to ask for a tip. Long story short that guy got sucked in the engine.

funny, i was just thinking about this the other day. logic told me it was to do with letting people on the ground know that the propellar was in motion. funny this came up in my recommended videos as ive never never searched for this information lol

They acctually used to do it but I don't know why exactly they stopped doing it. My guess would be that the pilots can't see anything behind them when reversethrusting themselves backwards potentialy putting lots of people into danger.The little car thingys have a way better view.

For long time I thought the main function of the spiral . Is when the engine is switched on. The ground engineer is needed to examine the engine by looking at the spirals and give the okay to the pilot

In auto racing we called the markings op chalk. I don't think they have differing names around circuits. Just operational chalk (op chalk is almost always a paint, wax or chalk) and is the mark on the gear or wheel For example; if the chief wanted to know if a cam, or piston was TDC (top dead center) he would say to his Apprentice to check the op chalk on the cam gear